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1. A mixture of ethane and methane is contained a glass bulb of 500 cm^3 capacity at 25 degree celsius. the pressure is 1.25 bar and the mass of the gas in the bulb is 0.53 grams. what is the average molar mass and what is the mole fraction of methane
2. Experiment by sir williams ramsey and by lord rayleigh around 1894 led to a gas residue remaining when all of the then known components of air had been removed. the density of the residue was 1.61 gm/liter at 25 degree celscius. what element had they obtained?
3. What is the volume of one mole of ethane at 350k and 70 bar according to (a) the ideal gas law (b) the van der waals equation
imagine that you run a nursing home facility in your area. analyze and comment on the role public policy has in the
Write equations for the reaction of each of the following with (1) Mg in ether followed by (2) additione of D2O to the resulting solution:
Which element is the central atom? Hydrogen cyanide, Ammonia, Calcium carbonate, Magnesium sulfate
Using the concentration of CH3COOH (0.8326M) and the equilibrium concentration of H3O+ (OJ = 31.6x10^-6 and milk = 3.16x10^-8), complete the reaction table for vinegar. Then calculate the acidity constant. Please show all work in solving the probl..
Use the letter from the reagent table for inorganic reagents and write the IUPAC substitutive name for the bromoalkane.
how many moles of hcl are required to react with 0.610 g of aloh3 in the above unbalanced reaction? use at least as
write a balance chemical equation for the combustion of 1 mol glycerin, and calculate delta H for this reaction at 298K if burning 1.24g of glycerin has a delta E of -54.6 kj
A 0.1550 g rock sample of unknown concentration was dissolved in HCl
if 76g of Cr2O3 and 27 g of al completely react to form 51 g of Al2O3 how many grams of Cr are formed?
Nitrogen and oxygen form an extensive series of at least seven oxides with the general formula NxOy. One of them is a blue solid that comes apart, reversibly, in the gas phase. It contains 36.84% N. What is the empirical formula of the oxide
It requires 251 J to melt 2.22 g of sodium metal at its normal melting point of 98°C. Calculate the molar heat of fusion of sodium.
A jogger runs at an average speed of 5.9 mi/h. a. How fast is she running in m/s? b. How many kilometers does she run in 98 min?
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